Apparatus for the manufacture of elastic tires.



PATENTED'JUNE 25 1907.

R.-M.-WHI'I'MAN.-

APPARATUS FOR THE MANUFACTURE OF ELASTIC. TIRESL APPLIOATION FILED DEC. 26. 1906.

'Unrrn srArE-s- PATENT orrion.

APPARATUS Foe THE MANUFACTURE or? E'LAsTac TBRES.

his. scenes.

I Originalapplication filed J 1111s 27, 1906, Serial Specification of To a. ic hoinl int-may concerit: 1 Be it lcnovm that l, RALPH MYERS WHIT- naii, a citlzenoi the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements inAp- 'pcratus for the Manufacture of Elastic Tires, of the following is a specif cation.

manufacture of elastic tires. Its objects are to provide convenient and efiicient means.

for constructing elastic tires and introducing puncture proof material into thebody theresupporte of without subjecting such material to the heat incident to vulcanization.

Some of the forms of tires, and the process of constructing them, to which the presentinvention is particularly applicable, are more fully described in my copending application, Serial No. 323,731, filed June 27, 19%, from which. the present case has been divided;

in the accompanying drawings, 1 have shown apparatus'embodying one of the preferred forms of my invention.

Figure 1 iso view taken in cross-section snowing one of my molds having a tire there- .lTig.v 2 shorts, in perspective, one of my sup lemental cores for forming in the body f t e tire a recess adaptedto receive a puncture proof shield. Fig. 3 shows, in perspective, a section of one of. my puncture proof shields. Fig. 4 shows a modification of Fig. 1, the upper mold being omitted. Fig. 5 shows a section taken on lige 5 of Fig. 4. Fig.6 shows a ,modification in which the supplemental core is made substantially flat instead of curved in the cross-section.

l3 represents the ordinary. core, preferably made in sections so as to be readily removable.

Ll represents the'outerusections of the -mold.

A represents the elastic portion of the tire.

B represents a supplemental core coniectcdto the core D by the projection (l and d in such positive relation to the core D as to afford space for a portion of the tire, indicated by E, E. This-supplemental core B may be made of iron, steel, or any suitable material adapted to stand the heat incident to vulcanization. tal core is 'prefcrablydivided into sections. l have found it convenient to make it in.

My invention relates to apparatus for the from the supplemental core.

The supplemen-i Letters Patent. Patented June 25, 1907.

No. 823,731. Divided and this application filed December 26, 1906.

Serial No. 349.402.

about four sections, and the shields incorrespondmg sections. The projection C may either be formedby one or more pins extend- B nto a corresponding recess F in the 00:61) (Fig. or by, a continuous tongue or edge extending circumferentially along the shield B (Figs. land 2), the recess F being correspondmgly extended, or the core D- may have .a socket extending forward to embrace the pin or othei'iprojection on B, as illustrated by the socket in Fig. 4.

N, N, Fig. 5, represent holes formed on the inner wall of the tire by the pins projecting be continuous with a continuous tongue, or corresponding projections will receive correspondlng holes in core D. L shows the shield, it being understood that it extends circumferentially of the tire. 'm is a rodextending through core D having a screw-thread H at its upper end and adapted to engage by such thread with a correspondingly threaded socket in projection 0, thereby securing supplemental'core B firmly in place and enabling core D to be readily released therefrom when desired.

In the operation of my device, sheets of the material of which the elastic tire is composed (generally a composition of rubber or such materials as are commonly used in the construction of-elastic tires) are placed on or extending to the recess for the projection C, and of sufficient thickness. to fill the space occupied by the flaps E, E. The supplemental core is then applied in the position shown in Figs. 1, 4 or 6, and material thereafter added sufficient to form the'entire body of the tire A, which is then ready for vulcani Zation in the-ordinary way. When the core is removed the-flaps'E,-.E can be bent, as illustrated by dotted-lines, to permit the withdrawal of the supplemental core B and the insertion in core of a pu'ncture roof shield adapted to turned tothe position from'which they have been bent and the division between the flaps covered and sealed by a strip preferably of elastic material cemented orotherwise attaclied alongthe joint.

' I prefer to use a shield of hard, tough leather, but my invention is adapted to use fill the space aii'orde I ,When the flaps are re-,,'

ing from the body of thesupplemental mold These pins .will 7o both sides of the core .1) meeting at the top,

place of'this supplemental ro'o with shields composed of other materials. My invention enables the shield to he introduced into the body of the vulcanized the in the most favorable position and made as tough and rigid as may be desired Without being exposed. to the heat of vulcanization, wh le the elastic body of the. tire may he vulcanized in the form which it is to permanently retain It also affords a convenient and economical mode of construction and enables the puncture proof shield to he withdrawn and replaced Wi thout disruption of the tire #Vhile l have illustrated one style of tire adapted to be attached to the rim of a wheel in one of the ordinary ways, my invention is adapted to other forms of tire and rim, and the modifications necessary for the practice of my invention in making sugh other forms of tires will readily suggest tliemsel'ves to those skilled in tire art.

I claim as my invention 1'. In combination with a main core for forming the interior of an elastic tire, the supplemental core attached thereto by :in engaging projection and a, rod for locking and releasing the same, substantially as described.

2. In combination with a main core adapted to form the interior of an elastic tire, a supplemental mold connected thereto by a pin and recess, and made in sections, suhstnntially as described.

In testimony whereof I hereunto allix my signature in presence of two witnesses.

RALPH MYERS l/VHITMAN.

Witnesses:

W. G. BOUBXE, STANDIsn BOURXE. 

